Compaq Presario 1500 Laptop can support powernowd by manually loading p4-clockmod module.

Binary package hint: powernowd

Everytime I load the CPU Frequency Applet, I got an error message saying CPU Frequency Scaling is not Supported. But manually I can make it work if I load p4-clockmod module.

---- This is my input ----
joelbryan@joelbryan-laptop:~$ sudo modprobe p4-clockmod
joelbryan@joelbryan-laptop:~$ sudo powernowd
powernowd: PowerNow Daemon v0.97, (c) 2003-2006 John Clemens
powernowd: Found 1 scalable unit: -- 1 'CPU' per scalable unit
powernowd: cpu0: 300Mhz - 2400Mhz (8 steps)
------------------------------

---- lspci ----
joelbryan@joelbryan-laptop:~$ lspci
00:00.0 Host bridge: Intel Corporation 82845 845 (Brookdale) Chipset Host Bridge (rev 04)
00:01.0 PCI bridge: Intel Corporation 82845 845 (Brookdale) Chipset AGP Bridge (rev 04)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 42)
00:1f.0 ISA bridge: Intel Corporation 82801CAM ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801CAM IDE U100 (rev 02)
00:1f.5 Multimedia audio controller: Intel Corporation 82801CA/CAM AC'97 Audio Controller (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M7 LW [Radeon Mobility 7500]
02:04.0 Communication controller: Conexant HSF 56k HSFi Modem (rev 01)
02:05.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link)
02:06.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller (rev 02)
02:08.0 Ethernet controller: Intel Corporation 82801CAM (ICH3) PRO/100 VE (LOM) Ethernet Controller (rev 42)
02:0e.0 USB Controller: NEC Corporation USB (rev 41)
02:0e.1 USB Controller: NEC Corporation USB (rev 41)
02:0e.2 USB Controller: NEC Corporation USB 2.0 (rev 02)
----------------

---- cat /proc/cpuinfo ----
joelbryan@joelbryan-laptop:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 2.40GHz
stepping : 4
cpu MHz : 300.000
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm up
bogomips : 4787.05
clflush size : 64
----------------

I can also load cpufreq_conservative, cpufreq_ondemand, cpufreq_powersave, cpufreq_stats, cpufreq_userspace and speedstep-lib without any problems.

However, I can't load the following modules, speedstep-smi, speedstep-ich, acpi-cpufreq.

Maybe the powernowd is loading the wrong module for my processor.

Joel